Application of AM5SE series microcomputer protection device in Foxconn power distribution project in Vietnam

Ren Yunye Ankerui Electric Co.
, Ltd.
Shanghai Jiading 201800 Abstract: The development of science and technology is inseparable from the development of technology in the electronics industry, in order to ensure the reliable operation of the power system of the electronic factory, it is necessary to configure a microcomputer protection device to effectively monitor the operation of the power system, and record the location and nature of the power system failure in real time, so as to provide effective reference information
for the rapid processing of the fault.

The microcomputer protection device introduced in this article can provide corresponding protection functions for different protection objects in the Foxconn power distribution project in Vietnam, which can greatly improve the reliability, safety and quality of substation operation, and is conducive to realizing the comprehensive automation of the substation and realizing unmanned or less manned duty
.

Keywords: electronics industry; Microcomputer protection; Reliability; Security; Power supply quality1 Overview Under the guidance of national policies, the electronics industry has developed rapidly, and a large number of new electronics industry factories
have been built.

The plant consumes a lot of electricity and most of the process needs to run uninterruptedly, the power distribution system structure is complex, and the equipment will cause major losses once it is accidentally powered off, which requires very high requirements for power supply reliability and is more sensitive to faults; Most of the process equipment is sensitive to voltage and current, and changes in voltage and current will lead to equipment damage, scrapping of production materials and other issues; And the factory voltage level is more, due to the power supply reliability requirements and process equipment need different voltage levels, factory distribution voltage from 110kV to 66kV, 35kV, 10kV, 0.
48kV, 0.
4kV and so on, involving the number of transformers of each voltage level is very large
.

In view of the above situation, it is necessary to configure a reliable and sensitive microcomputer protection device to ensure the reliable operation of the power system, thereby improving the power supply quality
of the plant substation.

Based on molds, Futaihua (Foxconn) has gradually developed into a high-tech service enterprise, and through the group business model, it has a market share of more than 40%
in the field of electronic foundry services (EMS).

The scope covers four major product areas, including consumer electronics, cloud network products, computer terminal products, components and others, and the total number of employees peaks about one million people
seasonally.

With a global footprint spanning three continents, with Taiwan as the center, the company has developed into Chinese mainland, India, Japan, Vietnam, Malaysia, Singapore, the Czech Republic, Hungary, Slovakia, the United States, Brazil and Mexico, with production and service bases
in more than 20 countries and regions.

This project is the power distribution project of Foxconn Energy Station in Vietnam, the project has a total of two energy stations, each energy station contains a 22kV opening and closing station and a 10kV substation distribution room, of which the 22kV opening and closing uses KYN28-24 metal armored handcart vacuum switch cabinet, the inlet cabinet adopts the upper inlet line, and the feeder cabinet adopts the upper line
.

The 10kV substation switchgear uses a KYN28-12 switchgear
.

This project requires a mechanical or electrical interlock
between the transformer cabinet door and the transformer inlet circuit breaker.

The accuracy of the transformer and meter is not less than 0.
5 level of
the metering cabinet.

The protective devices are distributed on the switchgear, and the switchgear is controlled
in situ in the field.

2 Product Demand This time, for different objects in the mechanical and electrical distribution project of Foxconn 22/10kV energy station in Vietnam, different microcomputer protection devices are configured, the inlet cabinet is equipped with AM5SE-F line protection device, PT cabinet is equipped with AM5SE-UB PT monitoring and parallel protection device, and the transformer cabinet with large capacity is equipped with AM5SE-T (transformer protection device) + AM5SE-D2 (differential protection device), The rest of the transformer cabinet is equipped with AM5SE-T transformer protection device, the parent cabinet is equipped with AM5SE-B self-projection protection device, the capacitor outlet cabinet is equipped with AM5SE-C capacitor protection device, the motor outlet cabinet is equipped with AM5SE-M motor protection device, these microcomputer protection devices mainly realize real-time monitoring and protection of the equipment operation of the high-voltage cabinet through the following protection functions: 3 Product Scheme This project distribution project has two energy stations, including 22kV opening and closing stations, 2 10kV substation distribution room, opening and closing station and high-voltage distribution room are two busbars, all using a single busbar system, including 90 high-voltage switchgear, the entire distribution room is equipped with a total of 86 protection devices, taking several parts of the system as an example, the above figure scheme is as follows: The entire 22/10kV power distribution project is set up with the microcomputer protection model and quantity as follows: 4 On-site installation pictures The project microcomputer protection is scattered on the various high-voltage switchgear, the on-site installation is shown in the following figure, the project has been used in 2022 power transmission, Functioning normally
.

5 Conclusion The stable development of the electronics industry is inseparable from the reliable operation of the power system, and the stable operation of the power system also needs microcomputer protection devices to ensure it
.

Compared with traditional relays, although the price of microcomputer protection is high, it can greatly improve the reliability, safety and quality of power supply of substation operation, which is conducive to the comprehensive automation of substations, the realization of unmanned or less manned duty, and another way greatly saves costs
.

The Foxconn power distribution project in Vietnam introduced in this article not only enables the comprehensive automation of the entire power distribution project by installing corresponding protection devices for each protection object, but also effectively reduces the labor intensity of the staff and improves the reliability
of equipment operation.

Reference[1] Ankerui Enterprise Microgrid Design and Application Handbook.
2020.
June Edition[2] Ankerui 35KV and Lower Substation Intelligent Distribution System Design and Product Secondary Principle Atlas.
2020.
October Edition[3] Ankerui User Substation Integrated Automation and O&M Solution.
2021.
11 Edition Author Introduction: Ren Yunye, male, currently working at Ankerui Electric Co.
, Ltd.
, the main research direction is the application of relay protection devices
。